# RKI 03 Series Single Gas Monitors (GP-03 / CO-03 / HS-03)

> RKI GP-03, CO-03 and HS-03 personal single gas detectors for combustible gas (LEL), carbon monoxide and H2S. 80 g, IP67. Quote from ERE Canada.

- **URL:** https://www.ereinc.com/products/rki-03-series-single-gas-monitors-gp-03-co-03-hs-03
- **Type:** Portable Gas Detector
- **Brand:** RKI Instruments
- **Pricing:** request a quote at https://www.ereinc.com/products/rki-03-series-single-gas-monitors-gp-03-co-03-hs-03
- **Tags:** brand:rki-instruments, cat:gas-detection, dept:instruments-sales, ere-equip, Portable Gas Detectors, RKI Instruments, rki-instruments-wave-2026-10, Type: Portable Gas Detector

## Description

The RKI 03 Series are compact personal single gas monitors: the GP-03 for combustible gas (0-100 % LEL), the CO-03 for carbon monoxide (0-500 ppm) and the HS-03 for hydrogen sulfide (0-100 ppm). Each weighs 2.8 oz (80 g), runs on two AAA batteries and is IP67 rated.
- GP-03 LEL: 35 hours on alkaline or 30 hours on Ni-MH batteries
- CO-03 and HS-03: more than 3,000 hours on alkaline batteries
- Flashing LEDs, buzzer and vibration with user adjustable 1st and 2nd alarms plus STEL and TWA
- Logs alarms, readings, calibration and bump test history
- Field replaceable sensors; the GP-03 LEL sensor is shared with the RKI GX-2009 and GX-2012
- IP67 dust and water resistant
- Intrinsically safe: CSA C/US Class I Div 1 Groups A B C D, ATEX and IECEx
- Calibrates on the RKI SDM-03 single point calibration station

## Images
- https://cdn.shopify.com/s/files/1/0561/7434/6433/files/GP-03.jpg?v=1792697971
- https://cdn.shopify.com/s/files/1/0561/7434/6433/files/GP-O3_hand.jpg?v=1792697972